Dept. of Neurology (신경과학); Dept. of Otorhinolaryngology (이비인후과학); Brain Research Institute (뇌연구소)
Journal of neurological sciences, Vol.222(1–2) : 105-107, 2004
Sudden deafness without associated neurological symptoms and signs is typically attributed to a viral inflammation of the labyrinth.
Although sudden deafness occurs with anterior inferior cerebellar artery (AICA) infarction, the deafness is usually associated with other
brainstem or cerebellum signs such as crossed sensory loss, lateral gaze palsy, facial palsy, Horner syndrome or cerebellar dysmetria. An 84-
year-old woman suddenly developed right-sided tinnitus, hearing loss, vertigo and vomiting. Audiometry and electronystagmography
documented absent auditory and vestibular function on the right side. T2-weighted and diffusion-weighted MRI showed a tiny infarct in the
right lateral inferior pontine tegmentum. AICA occlusion can cause sudden deafness and vertigo without brainstem or cerebellar signs.